1981-              Professor of English at Harvard (appointed Kenan Professor 1995)
1987               Visiting Professor of Comparative Literature, Dartmouth College (Summer)
1979-1981        Professor of English, Haverford College
1975-1979        Associate Professor of English, Yale University
1969-1975        Assistant Professor of English, Yale University

Current:
Chair, Department of Visual and Environmental Studies
Director, Carpenter Center for the Visual Arts
Parliamentarian, Faculty of Arts and Sciences
Trustee, The English Institute
Board of Directors, American Council of Learned Societies

Previous:
President, Consortium of Humanities Centers and Institutes
Director, Humanities Center in the Faculty of Arts and Sciences, Harvard University
Chair, Interdisciplinary Search Committee (senior appointments), Department of English
Chair, Junior Search Committee (junior appointments), Department of English
Organizer, ad hoc Committee on Cultural Studies, Faculty of Arts and Sciences
Chair, Standing Committee on the Status of Women, Harvard University
Associate Dean, Faculty of Arts and Sciences, Harvard University
Director of Graduate Studies, Harvard Dept. of English
Chair, Committee on Admissions, Harvard Department of English
Chair, Search Committees (various), Harvard Department of English                  
Chief Executive Officer, The English Institute
Co-Chair, Seminar on Feminist Literary Theory, Center for Literary and Cultural Studies
Chair, Seminar on Renaissance Studies, Center for Literary and Cultural Studies
Executive Secretary, The English Institute
Chair, The English Institute
Trustee, Shakespeare Association of America
Chair, Committee on Arrangements, Shakespeare Association of America
Chair, Committee on Inquiry, Harvard University
Acting Chair, Committee on Continuing Education, Harvard University
Chair, Committee on Educational Policy, Haverford College

Standing Committee on Dramatics, Harvard University
Degree Committee on Women's Studies, Harvard University
Standing Committee on the Status of Women, Harvard University
Faculty Co-Chair, Graduate Colloquium on Feminist Criticism, Harvard Department of English
Faculty Co-Chair, Graduate Colloquium on Renaissance Literature, Harvard Department of English
Faculty Chair, Graduate Colloquium on Teaching, Harvard Department of English
Core Program, Subcommittee on Literature and the Arts, Harvard University
Degree Committee on History and Literature, Harvard University
Degree Committee on Literature, Harvard University
Chair, 15-year Humanities Review and Pacific Rim Review, University of California
Review, Columbia University Press
Governing Board, University of California Humanities Research Institute
MLA Division Executive Committee on Shakespeare (Chair, 1991)
Co-Organizer, Conference on Gender at the Crossroads, Stanford University
Committee on Pedagogical Improvement, Harvard University
Editorial Board, Genders
Co-Organizer, Conference on Nationalisms and Sexualities, Harvard University
Editorial Board, Shakespeare Studies
member, Renaissance Society of America
member, International Association of University Professors of English
member, Modern Languages Association
member, Shakespeare Association of America
Standing Committee on Expository Writing, Harvard University
Standing Committee on Continuing Education, Harvard University
Selection Committee, Whiting Fellowships, Harvard University
350th Anniversary Committee, Harvard University
NEH Summer Seminar for College Teachers, Harvard University (Shakespeare and Genre)
NEH Summer Seminar for Secondary School Teachers (Hamlet)
NEH Summer Institutes, Folger Library; Shakespeare and Company
MLA Division Executive Committee on Teaching as a Profession